Improvement in air-tight joints for gas-retorts



CHARLESF. DIETERICH 8L A. SCHUESSLER;

Improvement in Air-Tight Joints for Gas-Retorts.

Patented lune 6.187].

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)m maro-uri/acmrmc UNITED STATES PATENT OFFICE.

CHARLES F. DIETERIOH ANT) AUGUST SOHITSSLER, OF NEW YORK, N. Y.

IMPRQViMENT IN AIR-TIGHT JOINTS FOR GAS-RETORTS.

Specification forming part of Letters Patent No. 115,586, dated June 6, 1871.

To all whom it may concern:

Be it known that We, OEARLEB F. DIETERICH and AUGUST SoniissLnu, both of the city, county, and State of New York, have invented a new and improved Device for making the Joints ofLids, or Man or Hand-Holes, on Gas- Retorts Air-Tight; and we do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawing and to the letters of reference marked thereon.

Heretofore man-hole plates or lids on gasretorts which are subjected to a high temperature have been closed air or gas tight against the retort by simply interposing a layer of loam between it and the retort and by screwing the lid against the loam.

The nature of our invention now consists in applying, in a practical manner, an elastic packing which is capable of withstanding a very high temperature between these lids and the retort, so that these lids or plates may be taken off and put on without damage to the packing, which will necessarily prove a great saving in time and material against the customary method of interposing clay or loam, as the latter has to be renewed each time the lid is taken ofl.

To enable .others skilled in the art to make and use our invention, we will proceed to describe its construction and operation.-

Figure I is a longitudinal section of the ,end

of a retort with our packing applied. Fig. II is an end view of the same; Fig. III, a longitudinal section through 0 D of it. I

A is the end of the retort as made of fireclay; B, ashort cast-iron neck or mouth-piece of the same internal section as the retort which is fastened properly to it, and which is closed by the lid G, the latter being tight against B, by means of the loose bar E and the bolt F. (See Figs. II and III.) The neck Bis provided with one or more recesses or grooves, 11 p, on the surface of its opening. These recesses are filled with an elastic packing, which will withstand high temperature without loosingits elasticity; such, for instance, as fibers of asbestus or any other suitable material. The lid G is provided with a projecting rim, or a corresponding number of rims, which fiteasily into the said recesses pp. The lid, being pressed by the screw-bolt F, with this projection against thepacking in pp, will thus close the retort perfectly air-tight,

and the lid may be taken off and put on again 7 without disturbing or injuring the packing any. The same result may, however, be obtained by making the groove or recess 12 p in the man-hole plate or lid, and a corresponding projecting rim on the end of the neck or mouth-piece B, it being substantially the same construction. The mouth-piece B we furnish with a short nozzle, R, which is closed on top with a stopper of clay or loam, or which may be closed with a suitable safety-valve, so that the retort may be relieved of any excessive pressure of gases through this nozzle in case the standing-pipe leading the gases from the retort should become clogged up.

What we claim as our invention, and desire to secure by Letters Patent, is-

One ora number of recesses or grooves and corresponding projecting rims, in combination with an elastic packing, of suitable material, on joints of man or hand hole plates or lids for gas-retorts which are subject to a high temperature.

CHAS. F. DIETERICH. AUGUST SGHUSSLER.

Witnesses:

B. A. Mean, H. J. Nllnn. 

